I'm not an adult, but Diretide is a seasonal gamemode that Valve (known as Volvo when fans of Valve games get annoyed) that was added at Halloween last year to the popular game DOTA 2. It wasn't added this year and the DOTA 2 community is annoyed at this, and started circlejerking with ༼ つ ◕_◕ ༽つ Give DIRETIDE to express their annoyance. And since this is the Volvo subreddit it was inevitable...

This is bloody genius. Volvo should totally do that, it would baffle the Dota community including Valve, increase Volvos popularity under future customers mainly and yet Volvo would still earn some lunch money from it.

Valve (a videogame company) has a game called Dota2. People are upset that there is no Halloween event, last year we had "Diretide". And when Dota2 players are upset with Valve or just circlejerking, they call them Volvo instead.

Because someone called dota doto at some point. I'm blanking on why though. Pronounciation error or sth. In any case, people started likig the idea of replacing every vowel with an O. And so Volvo was born. And hey, it turned out to be a pun, so everyone loves it! Or somothong!

For you confused car people, this is about Valve, an American game company who created and runs a game called DotA 2 (/r/DotA2, see the stickied post there). It's become a joke among fans of the company's works to call them "Volvo" for whatever dumb reason, so like "this character is overpowered, Volvo pls" (e.g., see the OP's flair).

Anyways, in 2012 they did a special Halloween event called Diretide, and this year they didn't, despite huge community anticipation and buildup in the week before. "༼ つ ◕_◕ ༽つ Give DIRETIDE" is a meme in the community demanding the return of Diretide 2013, and this thread is a complaint thread that Valve did not :'(

Edit: One of the top posts from /r/dota2 is one of the casting studios presenting their thoughts about Diretide.